Videx 2 Wire, Manual

Page: 18 / 44

Two Wire Videokit ESVK Series
PrtCode:ESVK_ENG_1.6.doc – Pag.18/44 25/11/2009 Rev.1.6
BUS LINE TERMINATION JP1
The factory preset for this jumper is “A” position: termination enabled. In case of more units (intercoms, videophones or video monitors) in a parallel con-
nection (bus wires are connected to the terminals of the first unit then from this to the second and so on up to 4 units max) JP1 must be set to A position
only for the last unit in the chain while on all other units must be set to B position (bus termination disabled). In case of units of different type, video-
phones, video monitor, hands free or standard intercoms etc. remains fixed the rule that the bus termination must be enabled only on the last unit in or-
der of connection.
INTERCOM CONNECTION BOARD
A
B
JP1
1
2
3
4
5
6
7
8
9
10
Fig.2
SIGNAL ON CONNECTION TERMINALS
Terminal Signal Description
1 GND Ground
2 LED Auxiliary LED +12Vdc Input
3
4
5 LB Local bell active low input
6 AL Alarm input (not implemented yet)
7
8 BUS2 Bus input
9
10 BUS1 Bus input